Backside of object will not get dark, why not?
This shadow cannot be made if there is no light source at back side of the chair.

And given that there are multiple lights in your collection, I think you deactivated viewport visibility(Eye icon) only. Click the Filter icon, and click the &quot;Camera&quot; button to see render visibility.
If it's on, object will be seen in the render. Turn off the &quot;Camera&quot; button to disalbe the light in render.